Finding the Fourth Proportional to 123.98, 186 and 69.91
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Solution
The fourth proportional to 123.98, 186 and 69.91 is: 104.88
Step by Step Solution
- Step 1: Write the proportion equation
123.98 : 186 = 69.91 : x - Step 2: Convert to fraction form
123.98/186 = 69.91/x - Step 3: Cross multiply
123.98x = 186 × 69.91 - Step 4: Simplify right side
123.98x = 13,003.26 - Step 5: Solve for x
x = 13,003.26/123.98 - Step 6: Final answer
x = 104.88
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.